Vulnerability identifier: #VU10851
Vulnerability risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-476
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local attacker to cause DoS condition no the target system.
The weakness exists due to NULL pointer dereference. A local attacker with the capability to insert iptables/netfilter rules can leverage the CAP_NET_RAW or CAP_NET_ADMIN capability, related to arpt_do_table in net/ipv4/netfilter/arp_tables.c, ipt_do_table in net/ipv4/netfilter/ip_tables.c, and ip6t_do_table in net/ipv6/netfilter/ip6_tables.c, trigger a jump to an invalid chain and cause the system to crash.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel: 4.15.0 - 4.15.7
External links
http://lists.openwall.net/netdev/2018/01/27/46
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.